An electroconductive paste composition, particularly for solar cells, contains silver particles, glass frit, an organic vehicle, and a nanoparticle additive. The invention includes, in one aspect, a device for detecting or quantitating a plurality of different analytes in a liquid sample. Bit-level operations are incorporated to determine a disk in the RAID 0 system and a block number on the disk that corresponds to a particular logical address. One of the end connector sleeves is adapted to be connected to the cleaning device and the other connector sleeve is connected to a flexible hose which is connected to the source of vacuum. The protocols provide for an identification of the user, and an authentication of the user to ensure the user is who heshe claims to be and a determination of entitlements that the user may avail themselves of within the enterprise system.